* system/plots.py: Added NetworkPlot, which may or may not work correctly.

* system/dataset.py: Removed a few lines of obsolete code.

workflows/test_workflow.py

@@ -4,6 +4,7 @@ from system import dataset, logger, plots, workflow
 #import gostat
 from scipy import array,randn,log
 import cPickle
+import networkx
 
 class TestWorkflow (workflow.Workflow):
 
@@ -103,7 +104,15 @@ class TestDataFunction(workflow.Function):
         x = randn(20,30)
         X = dataset.Dataset(x)
         p = plots.ScatterPlot(X, X, 'rows', 'rows', '0_1', '0_2')
-        return [X, plots.SinePlot(), p]
+        graph = networkx.XGraph()
+        for x in 'ABCDEF':
+            for y in 'ADE':
+                graph.add_edge(x, y, 3)
+        print networkx.adj_matrix(graph)
+        ds = dataset.GraphDataset(array(networkx.adj_matrix(graph)))
+        ds_plot = plots.NetworkPlot(ds)
+            
+        return [X, ds, plots.SinePlot(), p, ds_plot]
 
 class DatasetLog(workflow.Function):
     def __init__(self):